Data source

These data are from MNRF’s Fish Stocking Information System (FSIS: 2001- 2021). This summary is for LOMU Brown Trout stocking events only. If you see anything that looks like an error, please let me know.




Lifestage

This table shows the age (min and max) of the various Brown Trout life stages, and the time of year (month) that they were stocked. n = number of stocking events of the particular life stage.

LIFESTAGE n min_age max_age min_month max_month
Spring Fingerling 11 4 6 4 6
Fall Fingerling 29 10 12 10 11
Spring Yearling 280 14 19 2 6
Adult 3 77 77 5 5



Number Stocked

Bar Plot




Table

MNRF-stocked fish are almost exclusively Spring Yearlings. Other life stages are generally stocked by community hatcheries.

YEAR Spring Fingerling Fall Fingerling Spring Yearling Total
2001 1,400 – 172,341 173,741
2002 – – 162,746 162,746
2003 – – 181,276 181,276
2004 – – 171,821 171,821
2005 – 65,508 173,799 239,307
2006 – – 91,811 91,811
2007 – 81,079 170,211 251,290
2008 – – 177,133 177,133
2009 – – 178,510 178,510
2010 – – 190,040 190,040
2011 – – 163,314 163,314
2012 – 33,342 177,710 211,052
2013 – 25,287 166,308 191,595
2014 – 45,000 162,098 207,098
2015 20,000 30,861 177,169 228,030
2016 20,000 35,000 163,727 218,727
2017 35,000 18,600 173,741 227,341
2018 35,000 30,000 178,549 243,549
2019 35,000 30,000 178,721 243,721
2020 35,000 19,000 156,320 210,320
2021 35,000 – 160,600 195,600
Total 216,400 413,677 3,527,945 4,158,022






Number by Stocking Zone

Total number of Brown Trout stocked by stocking zone (most recent five years; 2001 - current). The map at the bottom of this page shows the location of the various stocking zones.

Recent five years

2001 - current




Mean Weight by Lifestage

MNRF-produced fish only; click on the legend to isolate life stages.




Biomass

Bar plot




Table

Note: biomass is given in kg.

YEAR Fall Fingerling Spring Fingerling Spring Yearling Total
2001 – 2.8 9,689.9 9,693
2002 – – 9,956.8 9,957
2003 – – 8,716.8 8,717
2004 – – 7,414.6 7,415
2005 1,242.9 – 6,794.6 8,038
2006 – – 4,153.5 4,154
2007 1,754.2 – 8,189.2 9,943
2008 – – 7,055.0 7,055
2009 – – 5,421.6 5,422
2010 – – 4,790.0 4,790
2011 – – 3,409.8 3,410
2012 834.6 – 5,833.0 6,668
2013 601.6 – 4,851.5 5,453
2014 1,155.0 – 3,940.2 5,095
2015 462.9 40.0 6,526.0 7,029
2016 525.0 40.0 7,467.4 8,032
2017 380.8 70.0 7,985.0 8,436
2018 600.0 70.0 7,756.3 8,426
2019 750.0 175.0 8,218.8 9,144
2020 475.0 70.0 6,830.1 7,375
2021 – 70.0 6,734.8 6,805
Total 8,782.0 537.8 141,734.9 151,055



Stocking Dates

Average dates of Brown Trout stocking events (spring yearlings only)




Stocking Temperatures

Average stocking site temperatures by year. Overall average (all years) indicated by horizontal dashed line and red text annotation.




Map

Stocking events aggregated by stocking site (spring yearlings only). Radius of circle indicates biomass (kg) stocked




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